Simon, What I detect here is different techniques for different waterline boats. Remember, we are 12 to 17 inches longer than 16' and we have more bow forward of the main beam. So, our downwind technique will be different for the boats. Bob 
"The election is over, the talking is done, Your party lost, my party won. So let us be friends, let arguments pass, I’ll hug my elephant, you kiss you’re a $$.”
Liberalism = A brain eating amoeba & a failed political ideology of the 20th century!
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